Finding the Fourth Proportional to 1,380,640.95, 1,905,550.72 and 837,074.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,380,640.95 : 1,905,550.72 = 837,074.45 : x
2. Step 2: Convert to fraction form
   1,380,640.95/1,905,550.72 = 837,074.45/x
3. Step 3: Cross multiply
   1,380,640.95x = 1,905,550.72 × 837,074.45
4. Step 4: Simplify right side
   1,380,640.95x = 1,595,087,823,562.29
5. Step 5: Solve for x
   x = 1,595,087,823,562.29/1,380,640.95
6. Step 6: Final answer
   x = 1,155,324.14